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const DT_SEPARATOR = /t|\s/i
const DATE = /^(\d\d\d\d)-(\d\d)-(\d\d)$/
const TIME = /^(\d\d):(\d\d):(\d\d)(?:\.\d+)?(?:z|([+-]\d\d)(?::?(\d\d))?)$/i
const DAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
export default function validTimestamp(str: string, allowDate: boolean): boolean {
// http://tools.ietf.org/html/rfc3339#section-5.6
const dt: string[] = str.split(DT_SEPARATOR)
return (
(dt.length === 2 && validDate(dt[0]) && validTime(dt[1])) ||
(allowDate && dt.length === 1 && validDate(dt[0]))
)
}
function validDate(str: string): boolean {
const matches: string[] | null = DATE.exec(str)
if (!matches) return false
const y: number = +matches[1]
const m: number = +matches[2]
const d: number = +matches[3]
return (
m >= 1 &&
m <= 12 &&
d >= 1 &&
(d <= DAYS[m] ||
// leap year: https://tools.ietf.org/html/rfc3339#appendix-C
(m === 2 && d === 29 && (y % 100 === 0 ? y % 400 === 0 : y % 4 === 0)))
)
}
function validTime(str: string): boolean {
const matches: string[] | null = TIME.exec(str)
if (!matches) return false
const hr: number = +matches[1]
const min: number = +matches[2]
const sec: number = +matches[3]
const tzH: number = +(matches[4] || 0)
const tzM: number = +(matches[5] || 0)
return (
(hr <= 23 && min <= 59 && sec <= 59) ||
// leap second
(hr - tzH === 23 && min - tzM === 59 && sec === 60)
)
}
validTimestamp.code = 'require("ajv/dist/runtime/timestamp").default'